EP2574714A2 - Charnière rotative avec ensemble d'amortissement réglable - Google Patents

Charnière rotative avec ensemble d'amortissement réglable Download PDF

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Publication number
EP2574714A2
EP2574714A2 EP12185409A EP12185409A EP2574714A2 EP 2574714 A2 EP2574714 A2 EP 2574714A2 EP 12185409 A EP12185409 A EP 12185409A EP 12185409 A EP12185409 A EP 12185409A EP 2574714 A2 EP2574714 A2 EP 2574714A2
Authority
EP
European Patent Office
Prior art keywords
rotor
stator
fill plug
hinge assembly
disposed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12185409A
Other languages
German (de)
English (en)
Other versions
EP2574714A3 (fr
Inventor
John M. Janak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITT Manufacturing Enterprises LLC
Original Assignee
ITT Manufacturing Enterprises LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ITT Manufacturing Enterprises LLC filed Critical ITT Manufacturing Enterprises LLC
Publication of EP2574714A2 publication Critical patent/EP2574714A2/fr
Publication of EP2574714A3 publication Critical patent/EP2574714A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/20—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices in hinges
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1207—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis
    • E05F1/1215—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis with a canted-coil torsion spring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/12—Special devices controlling the circulation of the liquid, e.g. valve arrangement
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/14—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with fluid brakes of the rotary type
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
    • E05Y2201/25—Force or torque adjustment therefore
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
    • E05Y2201/262—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore characterised by type of motion
    • E05Y2201/266—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore characterised by type of motion rotary
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/60—Application of doors, windows, wings or fittings thereof for other use
    • E05Y2900/602—Application of doors, windows, wings or fittings thereof for other use for containers

Definitions

  • This application relates generally to the field of hinge assemblies and more specifically to an adjustable fluidic damper for a rotary hinge assembly, such as used in connection with stowage bin door mechanisms for commercial aircraft cabins.
  • Stowage bin assemblies such as those found in passenger cabins on commercial aircraft include mechanisms that utilize a rotary hinge assembly linking the bin door and the stowage bin.
  • the hinge assembly includes a torsion spring that is torqued to move the stowage bin door from a closed position to an open position.
  • Several airlines include different door assemblies involving doors of various weights and sizes. Utilizing a single or universal rotary hinge assembly can therefore produce variations in terms of the opening time of the door, based on weight and geometry of the attached stowage bin door. That is, the rotary hinge assembly will open faster based on a light weight stowage bin door as opposed to a heavier stowage bin door.
  • an adjustable damper for a rotary hinge assembly utilized for opening and holding open a stowage bin door said hinge assembly comprising:
  • the fill plug In one version and in the adjustable damper portion of the rotary hinge assembly, there are two sets of vanes.
  • a set of stator vanes are stationarily disposed while a set of corresponding rotor vanes are caused to rotate in relation to the stator vanes when the stowage bin door is opened or closed.
  • Running the length of the vanes along a center axis of the rotary hinge assembly is the fill plug wherein damping fluid is metered between the sets of vanes.
  • the fill plug includes a set of entrance holes and exit holes defining a fluidic path for the damper.
  • damping fluid is pressurized and thus moved from one side of the rotor vanes to the other side by traveling through the entrance holes to the exit holes of the fill plug.
  • the valve is disposed in the center of the fill plug, the valve being adjustable to open, close or otherwise restrict the flow of damping fluid by selectively either opening or restricting at least a portion of the entrance and exit holes of the fill plug.
  • the adjustable valve is defined by a movable pin that is disposed within a center bore of the fill plug, the pin being movable so as to selectively open and close at least a portion of the entrance and exit holes of the fill plug.
  • a method for adjustably damping a rotary hinge assembly comprising the steps of:
  • an adjustable valve is provided to perform the selective adjustment step.
  • the adjustable valve can, for example, be provided in the form of a movable or adjustable pin that is rotatably disposed within a recess provided in the fill plug.
  • the fill plug rotates with the rotor according to one version of the hinge assembly in which a plug member is further included that provides a sealing function and defines a fluidic damping chamber, the plug member being sealingly attached to said rotary hinge assembly and retaining the fill plug.
  • the plug member includes an axial opening that permits a user to access the movable pin and permits adjustment of the damper without requiring disassembly of the herein described rotary hinge assembly.
  • One advantage that is realized by the present invention is that the torque variation acting on the rotary hinge assembly from the weight and geometry differences of a hinged bin door can effectively be compensated for through the adjustable damping feature of the rotary hinge assembly.
  • Yet another advantage provided is that the operating life of the hinge can be extended in use by adjusting the damping to compensate for wear of components over time in use.
  • Fig. 1 is an exploded view of a rotary hinge assembly having an adjustable damping portion, which is made in accordance with one aspect;
  • Fig. 2 is an enlarged portion of the exploded view of the adjustable damping portion of the rotary hinge assembly depicted according to Fig. 1 ;
  • Fig. 3 is a partially assembled perspective view of the adjustable damping portion of the rotary hinge assembly of Figs. 1 and 2 ;
  • Fig. 4 is a partially assembled side perspective view of the adjustable damping portion of the rotary hinge assembly, including a rotor/stator combination;
  • Fig. 5 is the partially assembled side perspective view of the adjustable damper portion of the rotary hinge assembly of Fig. 4 , shown sectioned;
  • Fig. 6 is a side sectioned view of the assembled rotary hinge assembly, including the adjustable damping portion of Figs. 1-5 , with the stator and end caps exploded;
  • Fig. 7 is an enlarged partial end view of the adjustable damping portion of the rotary hinge assembly, depicting the hinge in the door opened position;
  • Fig. 8 is the enlarged partial end view of the adjustable damping portion of the rotary hinge assembly according to Fig. 7 , depicting the hinge in the door closed position;
  • Fig. 9 is a partial side sectioned view of the rotary hinge assembly, partially broken away, illustrating the position of the adjustment valve in the fill plug with the valve in the opened position;
  • Fig. 10 is a similar partial side sectioned view of the rotary hinge assembly, similar to Fig. 9 , illustrating the position of the adjustment valve in the fill plug with the valve in the closed position.
  • a rotary hinge assembly 100 in accordance with the exemplary embodiment, the assembly including a hinge housing 104, Fig. 6 , having two mating hinge half assemblies 106, 108 that are fixedly attached to a stowage bin door and stowage bin of an aircraft (not shown), respectively, using appropriate fasteners (not shown).
  • the complementary door hinge half assembly 106 includes a center cylindrical mating portion 107 that when assembled to the stowage bin hinge half assembly 108 is received between two aligned end cylindrical mating portions 109, 111 thereof.
  • Each of the cylindrical mating portions 107, 109, 111 are hollow and sized to receive a hollow cylinder element 110.
  • the cylinder element 110 includes a center axial portion 112 having a hexagonally shaped exterior surface 113 that is shaped for fixed engagement with a corresponding hex-shaped opening 115 formed in the hollow cylindrical mating portion 107 of the door hinge half assembly 106.
  • the stowage bin door (not shown), along with the attached hinge half assembly 106 and cylindrical mating portion 107 will therefore rotate when opened and closed about an axis defined by the cylinder element 110 while the remaining hinge half assembly 108 is stationary, including mating portions 109, 111.
  • the cylindrical mating portions 107, 109, 111 and the cylinder element 110 combine to define an interior chamber for the hinge housing 104, which is suitably sized to retain a number of retained components including those of an adjustable damping portion of the herein described rotary hinge assembly 200, as described in a later portion.
  • the hinge housing 104 and more particularly the cylinder element 110 retains an axial portion of a torsion spring 160, with the proximal end 162 of the torsion spring being disposed within a spring retainer 230 and secured thereto by a transversely mounted groove pin 170.
  • the spring retainer 230 is further secured from rotation to a spring sleeve 240, which is utilized to torque the torsion spring 160 and then fix the spring to the end cylindrical mating portion 111 to prevent rotation.
  • the remaining or distal end 164 of the torsion spring 160 is similarly secured to the rotor 130 and cylinder element 110 by another transverse groove pin 170, relative to the adjustable damping portion of the rotary hinge assembly 100, which is now discussed in greater detail.
  • the adjustable damping portion of the rotary hinge assembly 100 includes the following components; namely, a stationarily mounted stator 120, a rotor 130 mounted for rotation, a fill plug 140, an adjustable valve 180 and a plug 190. Each of these components will be separately discussed prior to a discussion of the overall operation of the rotary hinge assembly 100, including that of the adjustable damping portion.
  • stator 120 and rotor 130 are depicted in greater detail in Figs. 2-6 . More specifically, the stator 120 is defined by a substantially cylindrical member or body 122. The exterior surface of the stator body 122 is defined by a hexagonally shaped periphery that is fitted within a correspondingly shaped opening of the end cylindrical mating portion 109 of the stowage bin hinge half assembly 108. Since the attached stowage bin (not shown), including the cylindrical mating portions 109, 111 remain stationary in use, the stator 120 is therefore fixedly retained in this assembly 100.
  • stator body 122 The interior of the stator body 122 is hollow with the exception of a pair of diametrically opposed stator vanes 124 that radially extend inwardly from an interior surface.
  • the stator vanes 124 are disposed at an intermediate axial portion of the stator body 122, wherein the specific number of vanes that are required can be varied accordingly. That is, at least one stator vane 124 is required.
  • the rotor 130 is defined by a substantially cylindrical rotor body 132 that includes a proximal extending portion 136, the latter of which is positioned to extend within a distal end of the cylinder element 110, as shown most particularly in Fig. 6 .
  • the proximal extending portion 136 includes an abutting shoulder 138 defined by a circumferential wall that includes a lateral opening which is sized for receiving the transverse groove pin 170 used for retaining the distal end 164 of the torsion spring 160.
  • An annular recess or groove 137 provided on the exterior circumferential surface of the rotor body 132 is sized to accommodate an elastomeric seal ring 146, in order to create a fluid tight seal for a damping chamber 150 that is defined by the stator 120 and rotor 130, when assembled and as discussed in greater detail subsequently.
  • the distal end of the rotor 130 includes a pair of rotor vanes 134, each vane defined as a distal extension of the rotor body 132 and radially disposed outboard from a center opening 139 axially extending through the rotor body.
  • each rotor vane 134 is defined by an outer surface that is substantially coplanar with the exterior surface of the rotor body 132, an interior radial surface as well as opposing lateral surfaces which are angled to define a vane configuration.
  • the number of rotor vanes can also be varied, provided at least one said vane is provided.
  • the fill plug 140 is an elongate substantially cylindrically shaped member made from a fluid impermeable material having a hollow interior, as well as a plurality of circumferentially disposed entrance and exit holes 142, only one of which is shown in Fig. 1 .
  • four (4) holes 142 are provided, each hole extending into the hollow interior of the fill plug 140, the holes being staggered axially along an intermediate axial portion of the fill plug and extending into a narrowed proximal end of a center bore extending to the distal end of the fill plug.
  • An elastomeric ring 143 is disposed within a groove 141 formed in the proximal end of the fill plug 140 to create a seal.
  • the proximal portion of the fill plug 140 is retained within the rotor 130 while the remainder of the fill plug axially extends outwardly through the center opening 139 of the rotor 130, between the rotor vanes 134 and into the interior of the plug 190.
  • the fill plug 140 is restrained from distal axial movement by means of the proximal end surface of the rotor body 132. When assembled, the fill plug 140 is disposed to rotate along with the rotor 130 when the stowage bin door (not shown) of the mechanism is opened and closed, as discussed in greater detail below.
  • the plug 190 is a substantially cylindrically shaped hollow component having a pair of axial grooves 196 that are sized to accommodate the distal ends of the rotor vanes 134 so as to retain the plug 190 to the rotor 130 so that both components rotate as the stowage bin door (not shown) is opened and closed.
  • An annular groove 194 formed on the exterior circumference of the plug 190 retains a sealing ring 198 that engages the interior surface of the stator 120 and creates a fluid tight seal to prevent fluid from passing therethrough and defining the distal side of the defined damping chamber 150.
  • a threaded nut 200 and washer 220 are assembled to the distal side of the plug 190.
  • a seal ring 210 is disposed between the exterior surface of the fill plug 140 and the interior surface of the plug 190 to provide a fluid tight seal, the seal ring being fitted into an annular recess 151 defined in the plug 190.
  • the adjustment valve 180 which according to this embodiment is an adjustable pin element, is axially disposed within the distal end of the fill plug 140 and more specifically within the center bore 147.
  • the fill plug 140 includes respective pairs of entrance holes and exit holes 142 defining a fluidic path.
  • the rotor vanes 134, the portion of the stator 120 having the stator vanes 124, the plug 190, and the intermediate axial portion of the fill plug 140 having the entrance and exit holes 142 combine to define the damping chamber 150.
  • Fluidic seals are provided by the seal rings 146 and 198 on opposing sides of the defined chamber 150 between the rotor body 132 and plug 190 and the interior surface of the stator 120, respectively.
  • Interior fluidic seals are further created by the seal ring 210 in the plug 190 between the interior of the plug 190 and the exterior of the fill plug 140, and the seal ring 143 disposed within the groove 141 provided within the proximal end of the fill plug 140, creating a seal between the interior of the rotor body 132 and the exterior of the fill plug 140, and a seal ring 183 provided in a groove 181 formed in the adjustable valve 180 creating a seal between the adjustable valve 180 and the center bore 147 of the fill plug 140.
  • the rotor 130 is caused to move rotationally depending on the position of the bin door (not shown) relative to the stowage bin (not shown) based on corresponding rotation of the hinge, thereby creating relative movement between the stationary stator vanes 124 and the rotor vanes 134 to produce pressure in and thus movement of fluid contained within the damping chamber 150 about the vanes and through the fluidic paths established by the entrance and exit holes 142 of the fill plug 140.
  • the adjustable valve 180 by way of rotation within the center bore 147 of the fill plug 140 can further restrict or permit fluid flow between the entrance and exit holes 142 of the defined damping chamber 150.
  • the adjustable valve 180 is a movable pin element having a distal end that includes a feature 185 that is accessible by means of an Allen wrench or similar tool to permit the pin to be rotated within the center bore 147.
  • the opening and closing of the stowage bin door causes relative movement of the retained components.
  • a quantity of damping fluid is retained by the rotary hinge assembly 100 within the defined damping chamber 150.
  • the torsion spring 160 is additionally torqued from its initially pretorqued condition when the bin door is open.
  • the door hinge half assembly 104 is caused to rotate along with the torsion spring 160 and the cylinder element 110, which coacts to rotate the attached rotor 130, fill plug 140 and plug 190 in relation to the stationary stator 120. Therefore and within the defined damping chamber 150, the resulting rotational movement of the rotor vanes 134 relative to the stationary stator vanes 124 causes pressure in the fluid and thus movement of the damping fluid.
  • FIG. 7 and 8 views are provided of the defined damping chamber 150.
  • the disposition of the vanes 124, 134 and the entrance and exit holes 142 of the fill plug 140 create four (4) spaced quadrants that are established through which the fluid is moved based on the rotational movement of the rotor vanes 134 in the defined damping chamber 150.
  • a damping force is therefore produced as fluid is pushed in either rotational direction, including along the fluidic path which is established between the entrance and exit holes 142 of the fill plug 140.
  • the stowage bin door (not shown) is opened, the preloaded torsion in the torsion spring 160 decreases.
  • the damping force caused by the movement of the contained fluid in the defined damping chamber 150 acts to control the opening velocity of the storage bin door.
  • the adjustable valve 180 can be accessed without requiring disassembly of the herein described hinge assembly 100 to selectively cover any of the entrance and exit holes 142 of the fill plug 140 or a portion thereof so as to affect or adjust the damping force, permitting a consistent opening velocity irrespective of the door weight and geometry.
  • An end cover 250 includes a center opening 254 that is substantially aligned with the head of the adjustable valve 180, enabling access of the feature 185 of the valve by means of an Allen wrench (not shown).
  • the open and closed positions of the adjustable valve 180 are each shown in Figs.
EP12185409.5A 2011-09-30 2012-09-21 Charnière rotative avec ensemble d'amortissement réglable Withdrawn EP2574714A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/250,268 US8745820B2 (en) 2011-09-30 2011-09-30 Rotary hinge with adjustable damping assembly

Publications (2)

Publication Number Publication Date
EP2574714A2 true EP2574714A2 (fr) 2013-04-03
EP2574714A3 EP2574714A3 (fr) 2016-07-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12185409.5A Withdrawn EP2574714A3 (fr) 2011-09-30 2012-09-21 Charnière rotative avec ensemble d'amortissement réglable

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US (1) US8745820B2 (fr)
EP (1) EP2574714A3 (fr)

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